With respect, the G-8 plus 5 is not an international negotiation like the Kyoto Protocol. It is the coming together of like-minded parties trying to advance the file, but it doesn't have the same function under international law. It's not part of an international institution. The only international institution within which this all occurs is the United Nations Framework Convention, of which the Kyoto Protocol is a subset.
The rest is nice. It's like the AP-6 or something else. These are all nice things, but they have no authority, they have no enforcement, they have no timelines, they have no deadlines, and they have no targets. Apart from that, they're perfect.